Means for connecting phenol-formaldehyde-condensation product and like dense surfaces with other bodies



Nov. 9 19 26.-

' 1,606,680 WISNER I MEANS FOR CONNECTING PHENOL FORMALDEHYDE CONDENSATION PRODUCT AND LIKE DENSE SURFACES WITH OTHER BODIES Filed Feb. 27

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A TTOR/IIEY Patented Nov. 9, 1926.

. UNITED STATES I Anobject of the present invention is to provide means whereby phenol-formalde hyde-condensation products and other plastics having hard, non-porous smooth surfaces, may be united tov other bodies by cement, glue or the like. It is known that glue will not adhere to phenol-formaldehyde-condensation product, since the latter is non-porous. For this reason it has been dound impossible to strongly unite such bodies unless by mechanical connection between the same. B the present invention means are provide substantially integral with the plastic body which will enable the latter to be readily and strongly united by glue or cement to any other body. capable of adhering to the glue or cement, and also to any other phenolformaldehyde-condensation product, glass or other dense material provided with said means.

The invention will be understood by reference to the accompanying -drawing in which- Figure 1 is a sectional perspective view of a rectangular hollow article provided with an embodiment of the invention;

Figure 2 is a sectional elevation of an umbrella handle provided with an embodiment of the invention, the shaft being shown in dotted lines;

view of two sheets of material having im= bedded therein elements constructed in accordance with the invention, these elements second sheet by glue or the like;

Figure 4 is a perspectlve view of a metal mesh having woven therein fibrous or other or cement.

Figure is a view similar to Figure 4 showing the said cords or strips in difierent formation, i. e. crossed, and therefore two'- 1 r P Figure 6 is a viewsimilar to Figs. 1 and 5 showing the cord or strips in spiral formation. y

In Figure 1 I have illustrated-a rectangular body A having a hollow interior and formed of a material having a non-porous smooth surface such as phenolformaldehydecondensation product. The hollow space 1 is intended for the reception of a member to which the body is to be firmly united by MEANS FOR CONNECTING PHENOL-FORMALDEHYDE-CONDENSATION PRODUCT LIKE DEN SE SURFACES WITH OTHER BODIES. i

Figure 3 is an'enlarged sectional detail of one sheet being held to those of the.

cords or strips having an aflinity for glue one means for associating the cords or strips with mesh-retaining means. In Figure 4 a 1,606,680 PATENT OFFICE.

ABRAM C. WISNER, OF NEW YORK, N. .Y., ASSIGNOR TO REYNOLDS SPRING COMPANY, OF JACKSON, MICHIGAN.

AND

Application flledlebruary 27, 1925. Serial No. 12,047.

glue or cement. In order that this may be accomplished the said body A has united therewith a mesh' or similar retaining member 2 within which is woven or laid fibre cords or strips 3 in such manner that portions of the strips appear at the surface of the said body A and other portions are not only imbedded in the body 'A, but are firmly held by the retaining member 2 which, throughout its area, is imbedded in the said body A. l

InFigure 2 I have illustrated a handle, such as umbrella handle i, in which is imbedded the retaining member 5 having woven or laid therein the fibre cords or strips 6 which appear at spaced areas of the inner surface of the handle.

-I have shown in dotted lines 7 the shaft of the umbrella which will be received within the central aperture 8 of the handle and be firmly held therein by means of glue or cement which will adhere to the exposed cord or strip surfaces. p p

In Figure 3 I have shown my invention employed for uniting phenolformald'ehydecondensation product, glass, or similar sheets 9, 10. Each sheet has imbedded therein a retaining member 11 for cords or strips. Sheet 9 is provided with the cords 12 held by retaining member 11 and the retaining member 11 of sheet 10 provides an anchorage for the cords or strips 12. It will be seen that these cords or strips appear upon the surface at spaced points in each sheet and the cords of one sheet are in register with the cords of the second sheet, thereby afiording means for securely uniting the two sheets by cement or glue retained by said cords or strips. y

In Figures 4, 5 and 6 I have shown varistrong wire mesh 13, 14 is employed as the retaining member for the fibre cords 15*, the latter being woven in and out of the wire strands so as to be laid alternately-on both faces of the latter. If desired, all or part of the wire strands running parallel with the fibre cords may be eliminated, the cord 15 then being held bythe'strands 13, 14 as retaining members. Y

In Figure 5 I have shown the cord 16 so laid in the mesh 17 that sections of the cord will cross other sections, thus forming a two- I ply cord. projection on each face of the retaining member made up of the mesh and cord. The purpose of this construction will hereinafter be set forth.

In Figure 6 I have shown the cord 18 spirally wound about the metal strand of mesh 19.

It will beunderstood that the manner in which the cord or strip is held by the retaining member can be widely varied from the three illustrations given in the drawings without departing from the spirit of my inx 'ention, and that the retaining member may be made of metal or other mesh, metal strands in non-mesh form woven in with the fibre strands, etc.

In forming an article provided with my invention, the wire mesh or other retaining member with the cord or strips of fibrous or other porous material held thereby will be laid on the face of the mold, if the article is to be in sheet form, or folded or bent about the surface of a mandrel if the article is to have an interior face or faces provided with the invention. The phenolformaldehydecondensation product or other plastic material is then introduced into the mold and the article formed in the usual manner. It will be seen that the the retaining member will be held away from the surface of the mandrel or mold by the cords or strips on the face thereof, and that the retaining member will be completely imbedded in the plastic material by the flow of the latter to the faces of the mold. The faces of the cords or strips contacting with the mold face or mandrel will not be covered by the plastic material and will be left exposed for the purpose desired.

If, in some cases, the pressure upon the plastic material in the mold acts to form a skin or covering over the normally exposed stood that. the

faces of the cords or strips, the same can be removed by slightly facing down the surface of the article as will be understood.

without further explanation.

When the cords or strips are so arranged in the retaining member as to be crossed, as in Figure 5, the retaining member will be raised from the face of the mold or mandrel a greater distance than when-the construction illustrated in Figure f is employed, and

material which will satisfactorily receiveand hold glue, cement or other binding material. In the claims I have defined the cords, strips or the like, as strands, and it is underlatter term shall be interpreted broadly.

Having described my invention v hat I claim and desire to secure by-Letters Patent is as follows 1. Means for connecting the surface of one plastic body to another body consisting ofv strands of a strain resisting material embedded in said plastic body and strands locked to the first named strands and leading to the surface of said plastic body, said last named strands being adapted to adhere a cementing material.

2. Means for connectin the surface of one plastic body to another ody, comprising a metallic-mesh embedded in said plastic body and a fibrous strand interwoven with said mesh and having portions projecting to and exposed at a, surface of said plastic body.

In testimony whereof, I have signed my name to this specification.

ABRAM O. WISNER. 

